SECONDARY BATTERY
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United States of America Patent
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Issued Date -
Apr 1, 2021
app pub date -
Jul 23, 2020
filing date -
Sep 30, 2019
priority date (Note) -
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Abstract
A secondary battery includes an electrode assembly including a positive electrode plate having a positive electrode non-coating portion, a negative electrode plate having a negative electrode non-coating portion, and a separator between the positive and negative electrode plates. The positive and negative electrode non-coating portions are exposed at opposite sides of the electrode assembly. The secondary battery also includes a case having a top opening and an internal space accommodating the electrode assembly, a cap plate sealing the top opening of the case, a positive electrode current collector plate perpendicular and welded to the positive electrode non-coating portion, a negative electrode current collector plate perpendicular and welded to the negative electrode non-coating portion; a positive electrode terminal on the cap plate and electrically connected to the positive electrode current collector plate, and a negative electrode terminal on the cap plate and electrically connected to the negative electrode current collector plate.
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